Excellent condition, very clean, knobs and nuts move freely. Matching pair of oxygen and gas pressure gauges signed Welder, U.S. Gauge, Made in USA. Both have thick glass lenses, brass casings and dials are in great shape. The valve is marked on back "Patented June 14, 1927, Forged, Serial No. A Made in U.S.A, Approved Safety Feature Incorporated in Bonnet". It also has a plate with its distributor in Montreal "Welding & Supplies Company Limited, Parthenais Street, Montreal". Great piece for your vintage welding station or to use in your steampunk project.